diff --git a/src/location.c b/src/location.c
index 6bb7ba3b..a5c37fbc 100644
--- a/src/location.c
+++ b/src/location.c
@@ -257,7 +257,7 @@ caret_set_file (const char *file)
             caret_free ();
         }
     }
-  return caret_info.file;
+  return !!caret_info.file;
 }
 
 void caret_init (void)
diff --git a/src/scan-code.l b/src/scan-code.l
index 5fae172a..563baf52 100644
--- a/src/scan-code.l
+++ b/src/scan-code.l
@@ -216,7 +216,7 @@ is_dot_or_dash (char ch)
 static inline bool
 contains_dot_or_dash (const char* p)
 {
-  return strpbrk(p, ".-");
+  return !!strpbrk (p, ".-");
 }
 
 /* Defines a variant of a symbolic name resolution. */